| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nano and Micro Additive Manufacturing
|
| Presentation Title |
Gold Micropillars by Aerosol Jet 3D Nanoprinting Method and Their Behavior Under Compressive Loads |
| Author(s) |
Sanjida Jahan, Chunshan Hu, Bin Yuan, Sandra Ritchie, Rahul Panat |
| On-Site Speaker (Planned) |
Sanjida Jahan |
| Abstract Scope |
Microscale gold 3D structures are used in applications such as implantable biosensors, microelectronic circuits, and catalytic devices. We used Aerosol Jet nanoprinting to demonstrate the fabrication of gold micropillars with aspect ratios of up to 10:1 and measure their behavior under uniaxial compression. These structures are then sintered at temperatures ranging 300°C to 900°C that results in a reduction in internal porosity, and an increase in the average grain sizes. Micropillars sintered at lower temperature exhibit a brittle behavior with high yield strength despite having a higher porosity but with smaller grain sizes. Micropillars sintered at higher temperatures have lower porosities and larger grain sizes and show ductile behavior with low yield strength. These results indicate the dominance of grain size over porosity in determining the micropillar deformation behavior and shows sintering as an important processing knob to modulate the properties of the microscale 3D structures fabricated via nanoparticle printing. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Electronic Materials |